What data might strengthen the connection between DDT and robin populations?​

Wich characteristics make the long ballot ineffective

2) based on the information, which is an opinion rather than a fact about immigrants to north america? immigrants

How did the mountains on the oregon trail influence the timing of pioneers’ travels? a.) the pioneers wanted to avoid times when there was snow in the mountains. the pioneers wanted to spend as much time as possible enjoying the mountain scenery. b.) the pioneers crossed the mountains in late fall when the trees were bare and the views were good. c.) the pioneers were rugged people who were not impacted by the terrain they crossed at any time.